Revert 196479 "Revert 196446 "Make touch drag drop and touch edi..."

Revert 196479 "Revert 196446 "Make touch drag drop and touch edi..."

The reason for the build break due to which the original patch was reverted
has been rectified in https://codereview.chromium.org/14113034/
No changes required to the original CL.

> Revert 196446 "Make touch drag drop and touch editing flags tri-..."
> 
> [Reason for revert: Caused repeatable ASAN failures on ChromiumOS bots,
> in the tests WebViewTest.Shim and WebViewTest.NewWindow. The failures
> indicated a Heap-Use-After-Free condition in
> TouchEditableImplAura::AttachToView]
> 
> > Make touch drag drop and touch editing flags tri-state and turn them on by
> > default on chromeos.
> > 
> > BUG=115237, 168162
> > 
> > Review URL: https://chromiumcodereview.appspot.com/14286004
> 
> TBR=varunjain@chromium.org
> 
> Review URL: https://codereview.chromium.org/14439009

TBR=nick@chromium.org

[ncarter (slow), 2013-04-26 19:26:38]

lgtm

[varunjain, 2013-04-29 17:22:44]

On 2013/04/26 19:26:38, ncarter wrote:
> lgtm

Closing this as I have relanded this as a new CL so I could run trybots on it:
https://chromiumcodereview.appspot.com/14283013/